A phase‐field model for cohesive fracture

SUMMARY In this paper, a phase‐field model for cohesive fracture is developed. After casting the cohesive zone approach in an energetic framework, which is suitable for incorporation in phase‐field approaches, the phase‐field approach to brittle fracture is recapitulated. The approximation to the Dirac function is discussed with particular emphasis on the Dirichlet boundary conditions that arise in the phase‐field approximation. The accuracy of...